package com.aaron.study;

import java.util.Collection;
import java.util.HashMap;
import java.util.Set;

/**
 * @author liurong
 * @date 2021/9/5 13:42
 * @version:
 */
public class HashMapStudy {

    public static void main(String[] args) {

        HashMap map = new HashMap() {
            {
                for (int i = 0; i < 10; i++) {
                    this.put(String.valueOf(i), i);
                }
            }
        };
//        map.get();

        Collection values = map.values();
        Set keySet = map.keySet();
        Set entrySet = map.entrySet();

//        new Set<>()

    }

}

